Mark Nelson
USATT#: 223812
613 610
2020 Austin Winter Open
18 Jan 2020 - 18 Jan 2020
18 Jan 2020 - 18 Jan 2020
This page explains how Mark Nelson (USATT# 223812)'s rating went from 613 to 610 at the 2020 Austin Winter Open held on 18 Jan 2020 - 18 Jan 2020. The links below take you to pages that describe various aspects of the rating processor.
Introduction
Initial Rating
The rating processor goes through 4 passes in order. The links take you to pages that provide detailed explanations of the calculations during each of the 4 passes.